# $Id: configure.ac,v 1.2 2004/03/30 01:21:34 jtownsen Exp $
# Process this file with autoconf to produce a configure script.

PACKAGE=db
AC_INIT(Berkeley DB,
	__EDIT_DB_VERSION__, support@sleepycat.com, db-__EDIT_DB_VERSION__)
AC_CONFIG_SRCDIR([../db/db.c])
AC_CONFIG_HEADERS([db_config.h:config.hin])

# Configure setup.
AC_CANONICAL_HOST()
AC_ARG_PROGRAM()

# Don't build in the top-level or dist directories.
AC_MSG_CHECKING(if building in the top-level or dist directories)
if [ test -d db_archive -o -f configure.ac ] ; then
	AC_MSG_RESULT(yes)
	AC_MSG_ERROR(
    [Berkeley DB should not be built in the top-level or dist directories.])
fi
AC_MSG_RESULT(no)

# Substitution variables.
AC_SUBST(ADDITIONAL_INCS)
AC_SUBST(ADDITIONAL_LANG)
AC_SUBST(ADDITIONAL_OBJS)
AC_SUBST(ADDITIONAL_PROGS)
AC_SUBST(BUILD_TARGET)
AC_SUBST(CFLAGS)
AC_SUBST(CONFIGURATION_ARGS)
AC_SUBST(CONFIGURATION_PATH)
AC_SUBST(CPPFLAGS)
AC_SUBST(CRYPTO_OBJS)
AC_SUBST(CXX)
AC_SUBST(CXXFLAGS)
AC_SUBST(DEFAULT_LIB)
AC_SUBST(DEFAULT_LIB_CXX)
AC_SUBST(INSTALLER)
AC_SUBST(INSTALL_LIBS)
AC_SUBST(INSTALL_TARGET)
AC_SUBST(JAR)
AC_SUBST(JAVACFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(LIBJSO_LIBS)
AC_SUBST(LIBS)
AC_SUBST(LIBSO_LIBS)
AC_SUBST(LIBTOOL)
AC_SUBST(LIBTSO_LIBS)
AC_SUBST(LIBTSO_MODSUFFIX)
AC_SUBST(LIBTSO_MODULE)
AC_SUBST(LIBXSO_LIBS)
AC_SUBST(LOAD_LIBS)
AC_SUBST(MAKEFILE_CC)
AC_SUBST(MAKEFILE_CCLINK)
AC_SUBST(MAKEFILE_CXX)
AC_SUBST(MAKEFILE_CXXLINK)
AC_SUBST(MAKEFILE_SOLINK)
AC_SUBST(MAKEFILE_XSOLINK)
AC_SUBST(OSDIR)
AC_SUBST(PATH_SEPARATOR)
AC_SUBST(POSTLINK)
AC_SUBST(REPLACEMENT_OBJS)
AC_SUBST(RPC_CLIENT_OBJS)
AC_SUBST(RPM_BUILD)
AC_SUBST(RPM_POST_INSTALL)
AC_SUBST(RPM_POST_UNINSTALL)
AC_SUBST(SOFLAGS)
AC_SUBST(db_cv_path_rpm_archive)
AC_SUBST(db_int_def)
AC_SUBST(o)

# RPM needs the current absolute path.
# RPM needs the list of original arguments, but we don't include the RPM
# option itself.
CONFIGURATION_PATH=${PWD-`pwd`}
CONFIGURATION_ARGS=`echo "$*" | sed -e 's/--with-rpm[[^ ]]*//'`

# Set the default installation location.
AC_PREFIX_DEFAULT(/usr/local/BerkeleyDB.__EDIT_DB_VERSION_MAJOR__.__EDIT_DB_VERSION_MINOR__)

# Configure the version information.
AC_SUBST(DB_VERSION_MAJOR)
DB_VERSION_MAJOR="__EDIT_DB_VERSION_MAJOR__"
AC_SUBST(DB_VERSION_MINOR)
DB_VERSION_MINOR="__EDIT_DB_VERSION_MINOR__"
AC_SUBST(DB_VERSION_PATCH)
DB_VERSION_PATCH="__EDIT_DB_VERSION_PATCH__"
AC_SUBST(DB_VERSION_STRING)
DB_VERSION_STRING='"__EDIT_DB_VERSION_STRING__"'
AC_SUBST(DB_VERSION_UNIQUE_NAME)

# Process all options before using them.
AM_OPTIONS_SET

# Set some #defines based on configuration options.
if test "$db_cv_diagnostic" = "yes"; then
	AC_DEFINE(DIAGNOSTIC)
	AH_TEMPLATE(DIAGNOSTIC,
    [Define to 1 if you want a version with run-time diagnostic checking.])
fi
if test "$db_cv_debug_rop" = "yes"; then
	AC_DEFINE(DEBUG_ROP)
	AH_TEMPLATE(DEBUG_ROP,
    [Define to 1 if you want a version that logs read operations.])
fi
if test "$db_cv_debug_wop" = "yes"; then
	AC_DEFINE(DEBUG_WOP)
	AH_TEMPLATE(DEBUG_WOP,
    [Define to 1 if you want a version that logs write operations.])
fi
if test "$db_cv_umrw" = "yes"; then
	AC_DEFINE(UMRW)
	AH_TEMPLATE(UMRW,
    [Define to 1 to mask harmless unitialized memory read/writes.])

fi
if test "$db_cv_test" = "yes"; then
	AC_DEFINE(CONFIG_TEST)
	AH_TEMPLATE(CONFIG_TEST,
    [Define to 1 if you want to build a version for running the test suite.])
fi

# Check for programs used in building and installation.
AM_PROGRAMS_SET
AC_PROG_INSTALL

# RPM support: change the standard make and install targets
if test "$db_cv_rpm" = "yes"; then
	BUILD_TARGET="rpm_build"

	# Check if we are running RPM version 3 or 4.
	case "`rpm --version`" in
	*version\ 4*)
		RPM_BUILD="rpmbuild"
		echo "_topdir $CONFIGURATION_PATH" > rpm-macro-defines;;
	*version\ 3*)
		RPM_BUILD="rpm"
		echo "topdir: $CONFIGURATION_PATH" > rpm-macro-defines;;
	esac
	INSTALL_TARGET="rpm_install"
else
	BUILD_TARGET="library_build"
	INSTALL_TARGET="library_install"
fi

# This is where we handle stuff that autoconf can't handle: compiler,
# preprocessor and load flags, libraries that the standard tests don't
# look for.  The default optimization is -O.  We would like to set the
# default optimization for systems using gcc to -O2, but we can't.  By
# the time we know we're using gcc, it's too late to set optimization
# flags.
#
# There are additional libraries we need for some compiler/architecture
# combinations.
#
# Some architectures require DB to be compiled with special flags and/or
# libraries for threaded applications
#
# The makefile CC may be different than the CC used in config testing,
# because the makefile CC may be set to use $(LIBTOOL).
#
# XXX
# Don't override anything if it's already set from the environment.
optimize_def="-O"
case "$host_os" in
aix4.3.*|aix5*)
	optimize_def="-O2"
	CC=${CC-"xlc_r"}
	CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE"
	LDFLAGS="$LDFLAGS -Wl,-brtl";;
bsdi3*)	optimize_def="-O2"
	CC=${CC-"shlicc2"}
	LIBS="$LIBS -lipc";;
bsdi*)	optimize_def="-O2";;
cygwin*)
	optimize_def="-O2"
	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE -D_REENTRANT";;
freebsd*)
	optimize_def="-O2"
	CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE"
	LDFLAGS="$LDFLAGS -pthread";;
gnu*|k*bsd*-gnu|linux*)
	optimize_def="-O2"
	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE -D_REENTRANT";;
hpux*)	CPPFLAGS="$CPPFLAGS -D_REENTRANT";;
irix*)	optimize_def="-O2"
	CPPFLAGS="$CPPFLAGS -D_SGI_MP_SOURCE";;
mpeix*)	CPPFLAGS="$CPPFLAGS -D_POSIX_SOURCE -D_SOCKET_SOURCE"
	LIBS="$LIBS -lsocket -lsvipc";;
osf*)	CPPFLAGS="$CPPFLAGS -pthread";;
*qnx*)	AC_DEFINE(HAVE_QNX)
	AH_TEMPLATE(HAVE_QNX, [Define to 1 if building on QNX.]);;
solaris*)
	CPPFLAGS="$CPPFLAGS -D_REENTRANT";;
esac

# Set CFLAGS/CXXFLAGS.  We MUST set the flags before we call autoconf
# compiler configuration macros, because if we don't, they set CFLAGS
# to no optimization and -g, which isn't what we want.
CFLAGS=${CFLAGS-$optimize_def}
CXXFLAGS=${CXXFLAGS-"$CFLAGS"}

# If the user wants a debugging environment, add -g to the CFLAGS value.
#
# XXX
# Some compilers can't mix optimizing and debug flags.  The only way to
# handle this is to specify CFLAGS in the environment before configuring.
if test "$db_cv_debug" = "yes"; then
	AC_DEFINE(DEBUG)
	AH_TEMPLATE(DEBUG, [Define to 1 if you want a debugging version.])

	CFLAGS="$CFLAGS -g"
	CXXFLAGS="$CXXFLAGS -g"
	db_cv_build_type=debug
else
	db_cv_build_type=release
fi
AC_SUBST(db_cv_build_type)

# The default compiler is cc (NOT gcc), the default CFLAGS is as specified
# above, NOT what is set by AC_PROG_CC, as it won't set optimization flags
# for any compiler other than gcc.
AC_PROG_CC(cc gcc)

# Checks for compiler characteristics.
AC_SUBST(DB_PROTO1)
AC_SUBST(DB_PROTO2)

DB_PROTO1="#undef __P"

# AC_PROG_CC_STDC only sets ac_cv_prog_cc_stdc if the test fails, so
# check for "no", not "yes".
if test "$ac_cv_prog_cc_stdc" = "no"; then
	DB_PROTO2="#define	__P(protos)	()"
else
	DB_PROTO2="#define	__P(protos)	protos"
fi

AC_C_CONST
AC_SUBST(DB_CONST)
if test "$ac_cv_c_const" != "yes"; then
	DB_CONST="#define const"
fi

# Because of shared library building, the ${CC} used for config tests
# may be different than the ${CC} we want to put in the Makefile.
# The latter is known as ${MAKEFILE_CC} in this script.
MAKEFILE_CC="${CC}"
MAKEFILE_CCLINK="${CC}"
MAKEFILE_CXX="nocxx"
MAKEFILE_CXXLINK="nocxx"

# See if we need the C++ compiler at all.  If so, we'd like to find one that
# interoperates with the C compiler we chose.  Since we prefered cc over gcc,
# we'll also prefer the vendor's compiler over g++/gcc.  If we're wrong, the
# user can set CC and CXX in their environment before running configure.
#
# AC_PROG_CXX sets CXX, but it uses $CXX and $CCC (in that order) as its
# first choices.
if test "$db_cv_cxx" = "yes"; then
	if test "$GCC" != "yes"; then
		case "$host_os" in
		aix*)		AC_CHECK_TOOL(CCC, xlC_r)
				LIBXSO_LIBS="-lC_r $LIBXSO_LIBS"
				LIBS="-lC_r $LIBS";;
		hpux*)		AC_CHECK_TOOL(CCC, aCC);;
		irix*)		AC_CHECK_TOOL(CCC, CC);;
		osf*)		AC_CHECK_TOOL(CCC, cxx);;
		solaris*)	AC_CHECK_TOOL(CCC, CC);;
		esac
	fi
	AC_PROG_CXX
	###### WORKAROUND: SEE SR #7938
	AC_PROG_CXXCPP
	###############################
	AC_CXX_HAVE_STDHEADERS
	MAKEFILE_CXX="${CXX}"
	MAKEFILE_CXXLINK="${CXX}"
fi

# Do some gcc specific configuration.
AC_GCC_CONFIG1
AC_GCC_CONFIG2

# We need the -Kthread/-pthread flag when compiling on SCO/Caldera's UnixWare
# and OpenUNIX releases.  We can't make the test until we know which compiler
# we're using.
case "$host_os" in
sysv5UnixWare*|sysv5OpenUNIX8*)
	if test "$GCC" == "yes"; then
		CPPFLAGS="$CPPFLAGS -pthread"
		LDFLAGS="$LDFLAGS -pthread"
	else
		CPPFLAGS="$CPPFLAGS -Kthread"
		LDFLAGS="$LDFLAGS -Kthread"
	fi;;
esac

# Export our compiler preferences for the libtool configuration.
export CC CCC
CCC=CXX

# Libtool configuration.
AC_PROG_LIBTOOL

SOFLAGS="-rpath \$(libdir)"
LIBTOOL_PROG="${SHELL} ./libtool"

# Set SOSUFFIX and friends
SOSUFFIX_CONFIG
MODSUFFIX_CONFIG
JMODSUFFIX_CONFIG

INSTALLER="\$(LIBTOOL) --mode=install cp -p"

MAKEFILE_CC="\$(LIBTOOL) --mode=compile ${MAKEFILE_CC}"
MAKEFILE_SOLINK="\$(LIBTOOL) --mode=link ${MAKEFILE_CCLINK} -avoid-version"
MAKEFILE_CCLINK="\$(LIBTOOL) --mode=link ${MAKEFILE_CCLINK}"
MAKEFILE_CXX="\$(LIBTOOL) --mode=compile ${MAKEFILE_CXX}"
MAKEFILE_XSOLINK="\$(LIBTOOL) --mode=link ${MAKEFILE_CXXLINK} -avoid-version"
MAKEFILE_CXXLINK="\$(LIBTOOL) --mode=link ${MAKEFILE_CXXLINK}"

LIBTOOL="\$(SHELL) ./libtool"

case "$host_os" in
cygwin*)
	MAKEFILE_SOLINK="$MAKEFILE_SOLINK -no-undefined"
	MAKEFILE_XSOLINK="$MAKEFILE_XSOLINK -no-undefined";;
esac

# Configure for shared libraries, static libraries, or both.  If both are
# configured, build the utilities and example programs with shared versions.
#
# $o is set to ".o" or ".lo", and is the file suffix used in the Makefile
# instead of .o
if test `$LIBTOOL_PROG --config |
    grep build_libtool_libs | grep no` 2>/dev/null; then
	enable_shared="no"
else
	enable_shared="yes"
fi
if test `$LIBTOOL_PROG --config |
    grep build_old_libs | grep no` 2>/dev/null; then
	enable_static="no"
else
	enable_static="yes"
fi

# C API.
if test "$enable_shared" = "no"; then
	DEFAULT_LIB="\$(libdb_version)"
	POSTLINK=": "
	o=".o"
else
	DEFAULT_LIB="\$(libso_target)"
	POSTLINK="\$(LIBTOOL) --mode=execute true"
	o=".lo"
fi
INSTALL_LIBS="$DEFAULT_LIB"
if test "$enable_static" = "yes"; then
	INSTALL_LIBS="$INSTALL_LIBS \$(libdb)"
fi

# Optional C++ API.
if test "$db_cv_cxx" = "yes"; then
	if test "$enable_shared" = "no"; then
		DEFAULT_LIB_CXX="\$(libcxx_version)"
	fi
	if test "$enable_shared" = "yes"; then
		DEFAULT_LIB_CXX="\$(libxso_target)"
	fi
	INSTALL_LIBS="$INSTALL_LIBS $DEFAULT_LIB_CXX"
	if test "$enable_static" = "yes"; then
		INSTALL_LIBS="$INSTALL_LIBS \$(libcxx)"
	fi
fi

# Optional Java API.
if test "$db_cv_java" = "yes"; then
	# Java requires shared libraries.
	if test "$enable_shared" = "no"; then
		AC_MSG_ERROR([Java requires shared libraries])
	fi

        # A classpath that includes . is needed to check for Java
	CLASSPATH=".:$CLASSPATH"
	export CLASSPATH
	AC_PROG_JAVAC
	AC_PROG_JAR
	AC_PROG_JAVA
	AC_JNI_INCLUDE_DIR

	AC_MSG_CHECKING(java version)
        case "$JAVA" in
	*kaffe* )
		JAVA_VERSION=`$JAVA -version 2>&1 |
			sed -e '/Java Version:/!d' -e 's/.*Java Version: \([[^ 	]]*\)[[ 	]]*/\1/'` ;;
	* )	JAVA_VERSION=`$JAVA -version 2>&1 |
        	       	sed -e '/ version /!d' -e 's/.*"\(.*\)".*/\1/'` ;;
	esac
	AC_MSG_RESULT($JAVA_VERSION)
	case "$JAVA_VERSION" in
	1.[[3456789]]* | 1.[[1-9]][[0-9]]* | [[23456789]]* ) ;;
	* )
		AC_MSG_ERROR([Java version 1.3 or higher required, got $JAVA_VERSION]) ;;
	esac

	for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS
	do
		CPPFLAGS="$CPPFLAGS -I$JNI_INCLUDE_DIR"
	done

	ADDITIONAL_LANG="$ADDITIONAL_LANG java"
	INSTALL_LIBS="$INSTALL_LIBS \$(libjso_target)"
else
	JAVAC=nojavac
fi

# MinGW support.
if test "$db_cv_mingw" = "yes"; then
	OSDIR=os_win32
	PATH_SEPARATOR="\\\\/:"

	AC_DEFINE(DB_WIN32)
	AC_DEFINE(STDC_HEADERS)
else
	OSDIR=os
	PATH_SEPARATOR="/"
fi

# Optional RPC client/server.
if test "$db_cv_rpc" = "yes"; then
	AC_DEFINE(HAVE_RPC)
	AH_TEMPLATE(HAVE_RPC, [Define to 1 if building RPC client/server.])

	RPC_CLIENT_OBJS="\$(RPC_CLIENT_OBJS)"
	ADDITIONAL_PROGS="berkeley_db_svc $ADDITIONAL_PROGS"

	case "$host_os" in
	hpux*)
		AC_CHECK_FUNC(svc_run,,
		    AC_CHECK_LIB(nsl, svc_run,
		    LIBS="-lnsl $LIBS"; LIBTSO_LIBS="-lnsl $LIBTSO_LIBS";
		    LIBJSO_LIBS="-lnsl $LIBJSO_LIBS"));;
	solaris*)
		AC_CHECK_FUNC(svc_run,, AC_CHECK_LIB(nsl, svc_run));;
	esac
fi

case "$host_os" in
    darwin*)
        LIBTSO_MODULE=""
        LIBTSO_MODSUFFIX=".dylib"
    ;;
    *)
        LIBTSO_MODULE="-module"
        LIBTSO_MODSUFFIX=@MODSUFFIX@
    ;;
esac

AM_TCL_LOAD

# Optional DB 1.85 compatibility API.
if test "$db_cv_compat185" = "yes"; then
	ADDITIONAL_INCS="db_185.h $ADDITIONAL_INCS"

	ADDITIONAL_OBJS="db185${o} $ADDITIONAL_OBJS"
fi

# You can disable pieces of functionality to save space.
#
# Btree is always configured: it is the standard method, and Hash off-page
# duplicates require it.
ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(BTREE_OBJS)"

# Hash can be disabled.
if test "$db_cv_build_hash" = "yes"; then
	AC_DEFINE(HAVE_HASH)
	AH_TEMPLATE(HAVE_HASH, [Define to 1 if building Hash access method.])
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(HASH_OBJS)"
	if test "$db_cv_build_verify" = "yes"; then
		ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(HASH_VRFY_OBJS)"
	fi
else
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS hash_stub${o}"
fi

# Queue can be disabled.
if test "$db_cv_build_queue" = "yes"; then
	AC_DEFINE(HAVE_QUEUE)
	AH_TEMPLATE(HAVE_QUEUE, [Define to 1 if building Queue access method.])
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(QUEUE_OBJS)"
	if test "$db_cv_build_verify" = "yes"; then
		ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(QUEUE_VRFY_OBJS)"
	fi
else
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS qam_stub${o}"
fi

# The replication code.
if test "$db_cv_build_replication" = "yes"; then
	AC_DEFINE(HAVE_REPLICATION)
	AH_TEMPLATE(HAVE_REPLICATION,
	    [Define to 1 if building replication support.])
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(REP_OBJS)"
else
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS rep_stub${o}"
fi

# The verification code.
if test "$db_cv_build_verify" = "yes"; then
	AC_DEFINE(HAVE_VERIFY)
	AH_TEMPLATE(HAVE_VERIFY,
	    [Define to 1 if building access method verification support.])
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(BTREE_VRFY_OBJS)"
else
	ADDITIONAL_OBJS="$ADDITIONAL_OBJS db_vrfy_stub${o}"
fi

# The crypto support.
if test -d "$srcdir/../crypto" -a "$db_cv_build_cryptography" = "yes"; then
	AC_DEFINE(HAVE_CRYPTO)
	AH_TEMPLATE(HAVE_CRYPTO,
    [Define to 1 if Berkeley DB release includes strong cryptography.])

	CRYPTO_OBJS="\$(CRYPTO_OBJS)"
else
	CRYPTO_OBJS="crypto_stub${o}"
fi

# Optional utilities.
if test "$db_cv_dump185" = "yes"; then
	ADDITIONAL_PROGS="db_dump185 $ADDITIONAL_PROGS"
fi

# Checks for include files, structures, C types.
AC_HEADER_STAT
AC_HEADER_TIME
AC_HEADER_DIRENT
AC_CHECK_HEADERS(sys/select.h sys/time.h sys/fcntl.h)
AC_CHECK_MEMBERS([struct stat.st_blksize])
AM_TYPES

AC_CACHE_CHECK([for ANSI C exit success/failure values], db_cv_exit_defines, [
AC_TRY_COMPILE([#include <stdlib.h>], return (EXIT_SUCCESS);,
    [db_cv_exit_defines=yes], [db_cv_exit_defines=no])])
if test "$db_cv_exit_defines" = "yes"; then
	AC_DEFINE(HAVE_EXIT_SUCCESS)
	AH_TEMPLATE(HAVE_EXIT_SUCCESS,
    [Define to 1 if you have EXIT_SUCCESS/EXIT_FAILURE #defines.])
fi

# Test for various functions/libraries that the test and example programs use:
#	sched_yield function
#	pthreads, socket and math libraries
AC_CHECK_FUNC(sched_yield,,
    AC_SEARCH_LIBS(sched_yield, rt, LOAD_LIBS="$LOAD_LIBS -lrt"))

# XXX
# We can't check for pthreads in the same way we did the test for sched_yield
# because the Solaris C library includes pthread interfaces which are not
# thread-safe.  For that reason we always add -lpthread if we find a pthread
# library.  Also we can't depend on any specific call existing (pthread_create,
# for example), as it may be #defined in an include file -- OSF/1 (Tru64) has
# this problem.
AC_HAVE_LIBRARY(pthread, LOAD_LIBS="$LOAD_LIBS -lpthread")

# XXX
# We could be more exact about whether these libraries are needed, but we don't
# bother -- if they exist, we load them.
AC_HAVE_LIBRARY(m, LOAD_LIBS="$LOAD_LIBS -lm")
AC_HAVE_LIBRARY(socket, LOAD_LIBS="$LOAD_LIBS -lsocket")
AC_HAVE_LIBRARY(nsl, LOAD_LIBS="$LOAD_LIBS -lnsl")

# Check for mutexes.
# We do this here because it changes $LIBS.
AM_DEFINE_MUTEXES

# Checks for system functions for which we have replacements.
#
# XXX
# The only portable getcwd call is getcwd(char *, size_t), where the
# buffer is non-NULL -- Solaris can't handle a NULL buffer, and they
# deleted getwd().
AC_REPLACE_FUNCS(getcwd getopt memcmp memcpy memmove raise)
AC_REPLACE_FUNCS(snprintf strcasecmp strdup strerror vsnprintf)

# Check for system functions we optionally use.
AC_CHECK_FUNCS(_fstati64 clock_gettime directio getrusage gettimeofday getuid)
AC_CHECK_FUNCS(pstat_getdynamic sched_yield select strtoul sysconf yield)

# Pread/pwrite.
# HP-UX has pread/pwrite, but it doesn't work with largefile support.
# NCR's version of System V R 4.3 has pread/pwrite symbols, but no support.
case "$host_os-$host_vendor" in
hpux*|sysv4.3*-ncr)
	AC_MSG_WARN(
	    [pread/pwrite interfaces ignored on $host_os-$host_vendor.]);;
*)
	AC_CHECK_FUNCS(pread pwrite);;
esac

# Check for fcntl(2) to deny child process access to file descriptors.
AC_CACHE_CHECK([for fcntl/F_SETFD], db_cv_fcntl_f_setfd, [
AC_TRY_LINK([
#include <sys/types.h>
#include <fcntl.h>], [
	fcntl(1, F_SETFD, 1);
], [db_cv_fcntl_f_setfd=yes], [db_cv_fcntl_f_setfd=no])])
if test "$db_cv_fcntl_f_setfd" = "yes"; then
	AC_DEFINE(HAVE_FCNTL_F_SETFD)
	AH_TEMPLATE(HAVE_FCNTL_F_SETFD,
    [Define to 1 if fcntl/F_SETFD denies child access to file descriptors.])
fi

# A/UX has a broken getopt(3).
case "$host_os" in
aux*)	AC_LIBOBJ([getopt]);;
esac

# Linux has a broken O_DIRECT flag, but we allow people to override it from
# the command line.
test_host_prw=yes
AC_CACHE_CHECK([for open/O_DIRECT], db_cv_open_o_direct, [
AC_TRY_LINK([
#include <sys/types.h>
#include <fcntl.h>], [
	open("a", O_RDONLY | O_DIRECT, 0);
], [db_cv_open_o_direct=yes; test_host_prw=no], [db_cv_open_o_direct=no])])
if test "$test_host_prw" = "no" -a "$db_cv_open_o_direct" = "yes"; then
	case "$host_os" in
	linux*)
		db_cv_open_o_direct=no;
		AC_MSG_WARN(
		    [O_DIRECT interface ignored on $host_os-$host_vendor.]);;
	esac
fi
if test "$db_cv_open_o_direct" = "yes"; then
	AC_DEFINE(HAVE_O_DIRECT)
	AH_TEMPLATE(HAVE_O_DIRECT, [Define to 1 if you have the O_DIRECT flag.])
fi

# Check for largefile support.
AC_SYS_LARGEFILE

# Figure out how to create shared regions.
#
# First, we look for mmap.
#
# BSD/OS has mlock(2), but it doesn't work until the 4.1 release.
#
# Nextstep (version 3.3) apparently supports mmap(2) (the mmap symbol
# is defined in the C library) but does not support munmap(2).  Don't
# try to use mmap if we can't find munmap.
#
# Ultrix has mmap(2), but it doesn't work.
mmap_ok=no
case "$host_os" in
bsdi3*|bsdi4.0)
	AC_MSG_WARN([mlock(2) interface ignored on $host_os-$host_vendor.])
	mmap_ok=yes
	AC_CHECK_FUNCS(mmap munmap, , mmap_ok=no);;
ultrix*)
	AC_MSG_WARN([mmap(2) interface ignored on $host_os-$host_vendor.]);;
*)
	mmap_ok=yes
	AC_CHECK_FUNCS(mlock munlock)
	AC_CHECK_FUNCS(mmap munmap, , mmap_ok=no);;
esac

# Second, we look for shmget.
#
# SunOS has the shmget(2) interfaces, but there appears to be a missing
# #include <debug/debug.h> file, so we ignore them.
shmget_ok=no
case "$host_os" in
sunos*)
	AC_MSG_WARN([shmget(2) interface ignored on $host_os-$host_vendor.]);;
*)
	shmget_ok=yes
	AC_CHECK_FUNCS(shmget, , shmget_ok=no);;
esac

# We require either mmap/munmap(2) or shmget(2).
if test "$mmap_ok" = "no" -a "$shmget_ok" = "no"; then
	AC_MSG_WARN([Neither mmap/munmap(2) or shmget(2) library functions.])
fi

# We need to add the additional object files into the Makefile with the correct
# suffix.  We can't use $LTLIBOBJS itself, because that variable has $U encoded
# in it for automake, and that's not what we want.  See SR #7227 for additional
# information.
#
# XXX: I'm not sure this is correct.
REPLACEMENT_OBJS=`echo "$LIB@&t@OBJS" |
		 sed "s,\.[[^.]]* ,$o ,g;s,\.[[^.]]*$,$o,"`

# This is necessary so that .o files in LIBOBJS are also built via
# the ANSI2KNR-filtering rules.
LIB@&t@OBJS=`echo "$LIB@&t@OBJS" |
	     sed 's,\.[[^.]]* ,$U&,g;s,\.[[^.]]*$,$U&,'`
LTLIBOBJS=`echo "$LIB@&t@OBJS" |
	   sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`
AC_SUBST(LTLIBOBJS)

# Initial output file list.
CREATE_LIST="Makefile
    db_cxx.h:$srcdir/../dbinc/db_cxx.in
    db_int.h:$srcdir/../dbinc/db_int.in
    include.tcl:$srcdir/../test/include.tcl"

# MinGW needs win_db.h.
if test "$db_cv_mingw" = "yes"; then
CREATE_LIST="$CREATE_LIST
    win_db.h:$srcdir/win_db.in"
fi

# Create the db.h file from a source file, a list of global function
# prototypes, and, if configured for unique names, a list of #defines
# to do DB_VERSION_UNIQUE_NAME substitution.
if test "$db_cv_uniquename" = "yes"; then
	CREATE_LIST="$CREATE_LIST
	db.h:$srcdir/../dbinc/db.in:$srcdir/../dbinc_auto/rpc_defs.in:$srcdir/../dbinc_auto/ext_def.in:$srcdir/../dbinc_auto/ext_prot.in"
else
	CREATE_LIST="$CREATE_LIST
	db.h:$srcdir/../dbinc/db.in:$srcdir/../dbinc_auto/rpc_defs.in:$srcdir/../dbinc_auto/ext_prot.in"
fi

# If configured for unique names, create the db_int_uext.h file (which
# does the DB_VERSION_UNIQUE_NAME substitution), which is included by
# the db_int.h file.
if test "$db_cv_uniquename" = "yes"; then
	CREATE_LIST="$CREATE_LIST
	db_int_def.h:$srcdir/../dbinc_auto/int_def.in"
	db_int_def='#include "db_int_def.h"'
fi

# Create the db_185.h and db185_int.h files from source files, a list of
# global function prototypes, and, if configured for unique names, a list
# of #defines to do DB_VERSION_UNIQUE_NAME substitution.
if test "$db_cv_compat185" = "yes"; then
	if test "$db_cv_uniquename" = "yes"; then
		CREATE_LIST="$CREATE_LIST
		db_185.h:$srcdir/../dbinc/db_185.in:$srcdir/../dbinc_auto/ext_185_def.in:$srcdir/../dbinc_auto/ext_185_prot.in
		db185_int.h:$srcdir/../db185/db185_int.in:$srcdir/../dbinc_auto/ext_185_def.in:$srcdir/../dbinc_auto/ext_185_prot.in"
	else
		CREATE_LIST="$CREATE_LIST
		db_185.h:$srcdir/../dbinc/db_185.in:$srcdir/../dbinc_auto/ext_185_prot.in
		db185_int.h:$srcdir/../db185/db185_int.in:$srcdir/../dbinc_auto/ext_185_prot.in"
	fi
fi

if test "$db_cv_rpm" = "yes"; then
	CREATE_LIST="$CREATE_LIST db.spec:../dist/db.spec.in"
fi

AC_CONFIG_FILES($CREATE_LIST)
AC_OUTPUT